UPD61052 NEC, UPD61052 Datasheet - Page 83

• Manufacturer Part Number: UPD61052
• Description: MPEG2 Audio / Video Encoder
• Manufacturer: NEC

(8) SDRAM interface
Remark
MCLK cycle time
MCLK high-level width
MCLK low-level width
MD31 to MD0-out hold time
MD31 to MD0-out delay time
MD31 to MD0 low-Z output time
MD31 to MD0 high-Z output time
MD31 to MD0-in setup time
MD31 to MD0-in hold time
MA13 to MA0 delay time
MA13 to MA0 hold time
MCLKE delay time
MCLKE hold time
Command delay time
Command hold time
ACT → REF/ACT command period
REF → REF/ACT command period
ACT → PRE command period
PRE → ACT command period
ACT → R/W command delay time
ACT (0) → ACT (1) command
period
Data-in to PRE command period
Data-in to ACT (REF) command
period (Auto pre-charge)
Mode register set cycle period
Refresh Time (4096 refresh cycle)
REF: Refresh, ACT: Active, PRE: Pre-charge
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
CK
CH
CL
OH
OD
LZ
HZ
DS
DH
AD
AH
CKS
CKH
CMD
CMH
RC
RC1
RAS
RP
RCD
RRD
DPL
DAL
RSC
REF
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Vs MCLK
Data Sheet S15082EJ4V0DS
Conditions
Min.
3.5
3.5
1.5
1.5
1.5
1.5
12
12
12
12
0
6
2
3
4
2
6
2
Typ.
12.3
µ
PD61051, 61052
Max.
50
9
9
9
9
9
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
83